Neil Young's new album, A Letter Home, is a covers collection without a single original composition, but the man has spent the last 50 years writing songs, so we can forgive him taking a little time off. Even with 35 albums, there are a ton of tracks that have fallen by the wayside over the years. Some are from albums that never came out, while others were only played live a handful of times before disappearing completely. Here are 20 of our favorite lesser-known songs that are either unreleased or under-appreciated.